页面刷新运行反码 [英] page refresh runs backcode

问题描述

当我使用imagebutton刷新或重新加载页面时，此按钮的脚本会运行，我该如何阻止这种情况发生。我尝试过这个选项，但是这并不总是调用IsPostBack或IsRefresh。

 受保护  Sub  imgBtnAktivate_Click（发件人作为 对象，e  As  System.Web.UI.ImageClickEventArgs） Handles  imgBtnAktivate.Click 
 如果 IsPostBack 那么 
 如果  CBool​​ （HttpContext.Current.Items（  IsRefresh ））然后 
 '  Response.Write（刷新） 
 Label1.Text =  刷新 
 
 退出  Sub  
  Else  
 Label1.Text =   Postback  
 Generate_Numbers（）
 
  Dim  RemoteURL  As  字符串 =   http：//www.domene。 com / recipient.aspx 
  Dim 编码作为 ASCIIEncoding = 新 ASCIIEncoding 
  Dim 数据 As  字符串 = 字符串 .Format（  DomName = {0}& ; DomeneSNr = {1}& SerNr = {2}，sDomName，sDomeneSNr，sSerNr）
  Dim  bytes（） As  字节 = encoding.GetBytes（data）
  Dim  HttpRequest  As  HttpWebRequest =  ctype （WebRequest.Create（RemoteURL），HttpWebRequest）
 
 httpRequest.Method =   POST 
 httpRequest.ContentType =    application / x -www  -  form  -  urlencoded 
 httpRequest.ContentLength = bytes.Length（）
 
 < span class =code-keyword> Dim  stream  As  IO.Stream = httpRequest.GetRequestStream 
 stream.Write（bytes， 0 ，bytes.Length）
 stream.Close（）
 结束 如果 
 其他 
 退出  Sub  
 结束 如果 
  end   Sub  

解决方案

您可以在这里查看答案：



在页面刷新时避免按钮点击事件 [ ^ ]



类似的问题也可以在这里找到：



http://www.c-sharpcorner.com/Forums/ [ ^ ]

您好，



请试试javascript刷新页面。你的图像按钮上有另一个事件onclientclick或直接你可以把onclick事件和使用下面的javascript代码。











功能pagerefresh（）

{

window.reload（）;



}







您的按钮事件喜欢 onclick =pagerefresh（）



谢谢，

这就完成了工作！

 私人 _refreshState 作为 布尔 
 私有 _isRefresh 作为 布尔值 
 
 受保护的 覆盖 < span class =code-keyword> Sub  LoadViewState（ ByVal  savedState  As  对象）
 
  Dim  AllStates 作为 对象（）= savedState 
  MyBase  .LoadViewState（AllStates（  0 ））
 _refreshState = 布尔 .Parse（AllStates（ 1 ））
 _isRefresh = _refreshState = Session（  __ ISREFRESH）
 
 结束  Sub  
 
 受保护的 覆盖 功能 SaveViewState（）作为 对象 
 
会话（  __ ISREFRESH）= _refreshStat e 
  Dim  AllStates（） As   Object  = 新 对象（ 2  ）{} 
 AllStates（ 0 ）=  MyBase  .SaveViewState 
 AllStates（< span class =code-digit> 1 ）= 不（_ refreshState）
 返回 AllStates 
 
 结束 功能 
 

When I refresh or reload the page with the imagebutton, the script for this button runs, how can I stop this happen. I have tried this option, but this will not always invoke IsPostBack or IsRefresh right.

Protected Sub imgBtnAktivate_Click (sender As Object, e As System.Web.UI.ImageClickEventArgs ) Handles imgBtnAktivate.Click
        If IsPostBack Then
            If CBool(HttpContext.Current.Items("IsRefresh")) Then
                'Response.Write("refreshed")
                Label1.Text = "Refreshed"

                Exit Sub
            Else
                Label1.Text = "Postback"
    Generate_Numbers ()

    Dim RemoteURL As String = " http://www.domene.com/recipient.aspx "
    Dim encoding As ASCIIEncoding = New ASCIIEncoding
    Dim data As String = String.Format ( " DomName = { 0 } & DomeneSNr = {1 } & SerNr = {2 }", sDomName , sDomeneSNr , sSerNr )
    Dim bytes ( ) As Byte = encoding.GetBytes (data )
    Dim HttpRequest As HttpWebRequest = ctype ( WebRequest.Create ( RemoteURL ) , HttpWebRequest )

    httpRequest.Method = " POST "
    httpRequest.ContentType = " application / x -www - form - urlencoded "
    httpRequest.ContentLength = bytes.Length ( )

    Dim stream As IO.Stream = httpRequest.GetRequestStream
    stream.Write ( bytes , 0, bytes.Length )
    stream.Close ( )
           End If
        Else
            Exit Sub
        End If
end Sub

解决方案

You can check your answer here:

Avoid button click event on page refresh[^]

Similar questions can be found here also:

http://www.c-sharpcorner.com/Forums/[^]

Hi,

Please try with javascript to refresh the page. you have another event on your image button onclientclick or direct you can put onclick event and use the below javascript code.





function pagerefresh()
{
window.reload();

}



your button event like onclick="pagerefresh()"

Thanks,

This did the job!

Private _refreshState As Boolean
Private _isRefresh As Boolean

Protected Overrides Sub LoadViewState(ByVal savedState As Object)

    Dim AllStates As Object() = savedState
    MyBase.LoadViewState(AllStates(0))
    _refreshState = Boolean.Parse(AllStates(1))
    _isRefresh = _refreshState = Session("__ISREFRESH")

End Sub

Protected Overrides Function SaveViewState() As Object

    Session("__ISREFRESH") = _refreshState
    Dim AllStates() As Object = New Object(2) {}
    AllStates(0) = MyBase.SaveViewState
    AllStates(1) = Not (_refreshState)
    Return AllStates

End Function

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